AEB Accident Simulation Using Radar Logic and Braking Sequences
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Solution Overview
Problem
There is a need for a simulation system and method to analyze and reproduce accidents involving advanced driver assistance systems (ADAS) with autonomous emergency braking (AEB) devices, to determine the limitations and performance of these systems, as well as driver negligence, by simulating the operation of the AEB device.
Innovation Solution
A simulation system and method that includes a data input unit for virtual driving data, a radar driving logic unit to calculate relative speed, distance, and azimuth, and an autonomous emergency braking driving logic unit to output warning signals or apply braking pressure, using actual test data to simulate the operation of the AEB device, including partial and full braking operations based on performance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a simulation system is developed to accurately reproduce AEB device operation, then the precision of accident analysis is improved, but the complexity of the simulation system increases
Solution Approach 1:
The simulation system is divided into distinct functional modules: a data input unit for receiving virtual driving data, a radar driving logic unit for calculating relative parameters, and an autonomous emergency braking driving logic unit for determining braking operations. This segmentation allows each module to handle specific tasks independently, improving accuracy while managing complexity through modular design.
Solution Approach 2:
The simulation system creates a virtual copy of the AEB device operation by receiving virtual driving data that replicates real driving conditions. The radar driving logic unit calculates relative speed, distance, and azimuth based on this virtual data, effectively copying the behavior of the actual AEB system in a controlled simulation environment.
2Reliability
If actual test data is integrated into the simulation, then the reliability of accident analysis is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The system performs preliminary calculations of relative speed, relative distance, and azimuth in the radar driving logic unit before the autonomous emergency braking driving logic unit determines the braking operation. This preliminary processing organizes the data in advance, making it easier to integrate with actual test data and improve reliability without overwhelming complexity during the critical braking decision phase.
Solution Approach 2:
The simulation system incorporates feedback loops where the autonomous emergency braking driving logic unit compares the calculated relative parameters with actual test data to determine appropriate braking operations. This feedback mechanism allows the system to learn from actual test results and improve the reliability of accident analysis while systematically managing the complexity of data integration.
Data Source
AI summary
Provided is a simulation system for accident analysis of an autonomous emergency braking device, the simulation system including a data input unit configured to receive virtual driving data including state data about a virtual driving vehicle, a target, and a driving environment; a radar driving logic unit configured to calculate a relative speed, a relative distance, and an azimuth between the virtual driving vehicle and the target based on the virtual driving data; and an autonomous emergency braking driving logic unit configured to output a warning signal or apply a braking pressure to the virtual driving vehicle according to a sequence of the autonomous emergency braking device, and to calculate collision data including a final stopping distance and a collision speed.